The 1st automatic transmission to implement a torque converter (rather than a fluid coupling) was the Buick Dynaflow, which was released with the 1948 design yr. In regular driving, the Dynaflow utilized only the leading equipment, depending on the torque multiplication of the torque convertor at reduce speeds. The Dynaflow https://gearbox-auto08639.dbblog.net/7459502/facts-about-gearbox-auto-revealed